nvim: Improve quarto syntax rendering

Removed the standalone vim-pandoc-syntax plugin since I have not really
been using its functionality for a long time. Additionally, set reduce
conceallevel in markdown and quarto files to 2 for the time being to
prevent some rendering errors (especially on headlines) when interacting
with the markdown.nvim (render-markdown) plugin.

nvim/.config/nvim/lua/plugins/data_analysis.lua

@@ -15,7 +15,6 @@ return {
 		dependencies = {
 			"jmbuhr/otter.nvim",
 			"neovim/nvim-lspconfig",
-			"vim-pandoc/vim-pandoc-syntax",
 			"hrsh7th/nvim-cmp",
 			"nvim-treesitter/nvim-treesitter",
 			{ "benlubas/molten-nvim", optional = true },

nvim/.config/nvim/lua/plugins/prose.lua

@@ -1,4 +1,4 @@
-local writing_ft = { "quarto", "pandoc", "markdown", "text", "tex", "typst", "bib", "context", "rst" }
+local writing_ft = { "quarto", "pandoc", "markdown", "text", "tex", "typst", "bib", "context", "rst", "vimwiki" }
 
 local prose_plugs = {
 	-- UI improvements
@@ -44,7 +44,17 @@ local prose_plugs = {
 	{
 		"MeanderingProgrammer/markdown.nvim",
 		main = "render-markdown",
-		opts = {},
+		opts = {
+			file_types = { "markdown", "quarto", "pandoc", "vimwiki" },
+			win_options = {
+				conceallevel = {
+					rendered = 2,
+				},
+			},
+			heading = {
+				width = "block",
+			},
+		},
 		name = "render-markdown", -- Only needed if you have another plugin named markdown.nvim
 		dependencies = { "nvim-treesitter/nvim-treesitter", "nvim-tree/nvim-web-devicons" }, -- if you prefer nvim-web-devicons
 		ft = writing_ft,